| 摘要 |
<p>Provided is a planetary gear device that can be manufactured at a low cost without integrally forming a carrier and pins. A first side plate 4 as carrier is formed to a disc plate shape and secures thereto pins 7 to protrude the pins 7 from one end surface in an axial direction. The outside diameter of the first side plate 4 is formed to be a small diameter on one side in the axial direction and a large diameter on the other side in the axial direction. The fist side plate 4 is provided with press-fitting hole portions 41 a with the pins press-fitted thereinto and small-diameter side concavities 41 b that are formed on the press-fitting hole portions on one side in the axial direction, that open to one end surface in the axial direction of the first side plate 4 and that have internal surfaces being out of contact with the pins 7 at at least parts thereof.</p> |
